<template>
    <div>
        <h1>{{ message }}</h1>
        <button @click="greet">greet</button>
    </div>
</template>
<script>
export default {
    data() {
        return {
            message:'Hello, Vue 3'
        }
    },
    methods: {
        greet() {
            //$ attrs 接受父组件传给当前组件的name属性
            this.message='Hello,' + this. $attrs.name +'!'
        }
    }
}
</script>
<style lang="">
    
</style>